Home / 203,079.28-280,240.26-112,428.88

Finding the Fourth Proportional to 203,079.28, 280,240.26 and 112,428.88

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Solution

The fourth proportional to 203,079.28, 280,240.26 and 112,428.88 is: 155,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,079.28 : 280,240.26 = 112,428.88 : x
  2. Step 2: Convert to fraction form
    203,079.28/280,240.26 = 112,428.88/x
  3. Step 3: Cross multiply
    203,079.28x = 280,240.26 × 112,428.88
  4. Step 4: Simplify right side
    203,079.28x = 31,507,098,562.71
  5. Step 5: Solve for x
    x = 31,507,098,562.71/203,079.28
  6. Step 6: Final answer
    x = 155,146.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.